[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.997310] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.700582] random: sshd: uninitialized urandom read (32 bytes read) [ 20.126876] random: sshd: uninitialized urandom read (32 bytes read) [ 20.882159] random: sshd: uninitialized urandom read (32 bytes read) [ 44.279522] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. [ 49.702522] random: sshd: uninitialized urandom read (32 bytes read) [ 49.799986] IPVS: ftp: loaded support on port[0] = 21 [ 49.799992] IPVS: ftp: loaded support on port[0] = 21 [ 49.802564] IPVS: ftp: loaded support on port[0] = 21 [ 49.806734] IPVS: ftp: loaded support on port[0] = 21 [ 49.815604] IPVS: ftp: loaded support on port[0] = 21 [ 49.817260] IPVS: ftp: loaded support on port[0] = 21 [ 49.821164] IPVS: ftp: loaded support on port[0] = 21 [ 49.831643] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program [ 49.921976] FAULT_INJECTION: forcing a failure. [ 49.921976] name failslab, interval 1, probability 0, space 0, times 1 [ 49.929646] FAULT_INJECTION: forcing a failure. [ 49.929646] name failslab, interval 1, probability 0, space 0, times 1 [ 49.933245] CPU: 1 PID: 4482 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 49.952989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.962321] Call Trace: [ 49.964898] dump_stack+0x1c9/0x2b4 [ 49.968514] ? dump_stack_print_info.cold.2+0x52/0x52 [ 49.973684] ? save_stack+0xa9/0xd0 [ 49.977295] should_fail.cold.4+0xa/0x11 [ 49.981338] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 49.986509] ? address_space_init_once+0x30/0x30 [ 49.991926] ? __put_user_ns+0x60/0x60 [ 49.995798] ? lock_downgrade+0x8f0/0x8f0 [ 49.999928] ? current_time+0x72/0x1b0 [ 50.003794] ? lock_downgrade+0x8f0/0x8f0 [ 50.007929] ? kasan_check_write+0x14/0x20 [ 50.012143] ? __lockdep_init_map+0x105/0x590 [ 50.016617] ? lock_acquire+0x1e4/0x540 [ 50.020570] ? fs_reclaim_acquire+0x20/0x20 [ 50.024870] ? lock_downgrade+0x8f0/0x8f0 [ 50.029002] ? check_same_owner+0x340/0x340 [ 50.033474] ? rcu_note_context_switch+0x730/0x730 [ 50.038382] ? kasan_check_read+0x11/0x20 [ 50.042518] __should_failslab+0x124/0x180 [ 50.046733] should_failslab+0x9/0x14 [ 50.050511] kmem_cache_alloc+0x2af/0x760 [ 50.054652] ? _raw_spin_unlock+0x22/0x30 [ 50.058787] ? __d_instantiate+0x522/0x750 [ 50.063003] __get_empty_filp+0x11b/0x620 [ 50.067127] ? d_instantiate+0x79/0xa0 [ 50.070994] ? proc_nr_files+0x60/0x60 [ 50.074862] ? do_raw_spin_lock+0xc1/0x200 [ 50.079078] ? kasan_check_read+0x11/0x20 [ 50.083204] ? do_raw_spin_unlock+0xa7/0x2f0 [ 50.087591] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 50.092152] ? kasan_check_write+0x14/0x20 [ 50.096366] ? do_raw_spin_lock+0xc1/0x200 [ 50.100591] alloc_file+0x29/0x3e0 [ 50.104119] ? clear_nlink.part.10+0x65/0x80 [ 50.108621] __shmem_file_setup+0x313/0x700 [ 50.112923] ? check_same_owner+0x340/0x340 [ 50.117222] ? shmem_fill_super+0xa50/0xa50 [ 50.121530] ? get_unused_fd_flags+0x122/0x1a0 [ 50.126087] ? __alloc_fd+0x710/0x710 [ 50.129876] shmem_file_setup+0x2f/0x40 [ 50.133831] __x64_sys_memfd_create+0x2af/0x4f0 [ 50.138480] ? memfd_fcntl+0x1e80/0x1e80 [ 50.142522] do_syscall_64+0x1b9/0x820 [ 50.146387] ? syscall_return_slowpath+0x5e0/0x5e0 [ 50.151301] ? syscall_return_slowpath+0x31d/0x5e0 [ 50.156209] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 50.161216] ? prepare_exit_to_usermode+0x291/0x3b0 [ 50.166231] ? perf_trace_sys_enter+0xb10/0xb10 [ 50.170904] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.175737] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.180906] RIP: 0033:0x445bc9 [ 50.184079] Code: dd cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.203226] RSP: 002b:00007fff5cef0438 EFLAGS: 00000297 ORIG_RAX: 000000000000013f [ 50.210915] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445bc9 [ 50.218256] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000004a79ef [ 50.225521] RBP: 0000000000010000 R08: 0000000000000001 R09: 0000000000000000 [ 50.232767] R10: 0000000000000000 R11: 0000000000000297 R12: ffffffffffffffff [ 50.240019] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 50.247285] CPU: 0 PID: 4486 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 50.248934] FAULT_INJECTION: forcing a failure. [ 50.248934] name failslab, interval 1, probability 0, space 0, times 0 [ 50.255861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.255865] Call Trace: [ 50.255885] dump_stack+0x1c9/0x2b4 [ 50.255904] ? dump_stack_print_info.cold.2+0x52/0x52 [ 50.287749] ? need_to_create_worker+0x280/0x280 [ 50.292908] should_fail.cold.4+0xa/0x11 [ 50.296985] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 50.302087] ? lock_downgrade+0x8f0/0x8f0 [ 50.306242] ? lock_downgrade+0x8f0/0x8f0 [ 50.310391] ? trace_hardirqs_on+0x10/0x10 [ 50.314620] ? lock_release+0xa30/0xa30 [ 50.318588] ? percpu_ref_tryget_live+0x15b/0x440 [ 50.323441] ? mem_cgroup_id_get_many+0x160/0x160 [ 50.328274] ? get_mem_cgroup_from_mm+0x1ea/0x440 [ 50.333371] ? lock_downgrade+0x8f0/0x8f0 [ 50.337516] ? lock_release+0xa30/0xa30 [ 50.341470] ? kernel_text_address+0x79/0xf0 [ 50.345857] ? __kernel_text_address+0xd/0x40 [ 50.350334] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.355854] ? should_fail+0x246/0xd86 [ 50.359729] ? lock_acquire+0x1e4/0x540 [ 50.363683] ? rcu_read_unlock+0x16/0x70 [ 50.367737] ? lock_downgrade+0x8f0/0x8f0 [ 50.371866] __should_failslab+0x124/0x180 [ 50.376083] should_failslab+0x9/0x14 [ 50.379866] kmem_cache_alloc_trace+0x4b/0x780 [ 50.384441] ? __shmem_file_setup+0x1f3/0x700 [ 50.388936] ? __x64_sys_memfd_create+0x2af/0x4f0 [ 50.393763] ? do_syscall_64+0x1b9/0x820 [ 50.397806] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.403151] memcg_kmem_get_cache+0x42c/0x9d0 [ 50.407628] ? mem_cgroup_handle_over_high+0x130/0x130 [ 50.412884] ? fs_reclaim_acquire+0x20/0x20 [ 50.417194] ? lock_downgrade+0x8f0/0x8f0 [ 50.421321] ? lock_release+0xa30/0xa30 [ 50.425275] ? check_same_owner+0x340/0x340 [ 50.429573] ? lock_release+0xa30/0xa30 [ 50.433529] ? rcu_note_context_switch+0x730/0x730 [ 50.438450] kmem_cache_alloc+0x18a/0x760 [ 50.442575] ? kasan_slab_alloc+0x12/0x20 [ 50.446699] ? kmem_cache_alloc+0x2fc/0x760 [ 50.451000] ? shmem_destroy_callback+0xc0/0xc0 [ 50.455646] shmem_alloc_inode+0x1b/0x40 [ 50.459787] alloc_inode+0x63/0x190 [ 50.463395] new_inode_pseudo+0x71/0x1a0 [ 50.467435] ? prune_icache_sb+0x1b0/0x1b0 [ 50.471649] ? shrink_dcache_for_umount+0x2b0/0x2b0 [ 50.476643] new_inode+0x1c/0x40 [ 50.479990] shmem_get_inode+0xf1/0x910 [ 50.483944] ? do_raw_spin_lock+0xc1/0x200 [ 50.488158] ? shmem_encode_fh+0x340/0x340 [ 50.492379] ? _raw_spin_unlock+0x22/0x30 [ 50.496506] ? __alloc_fd+0x34e/0x710 [ 50.500383] ? exit_files+0xb0/0xb0 [ 50.504000] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.509535] __shmem_file_setup+0x259/0x700 [ 50.513843] ? check_same_owner+0x340/0x340 [ 50.518148] ? shmem_fill_super+0xa50/0xa50 [ 50.522486] ? get_unused_fd_flags+0x122/0x1a0 [ 50.527055] ? __alloc_fd+0x710/0x710 [ 50.530857] shmem_file_setup+0x2f/0x40 [ 50.534816] __x64_sys_memfd_create+0x2af/0x4f0 [ 50.539474] ? memfd_fcntl+0x1e80/0x1e80 [ 50.543692] do_syscall_64+0x1b9/0x820 [ 50.547569] ? syscall_return_slowpath+0x5e0/0x5e0 [ 50.552477] ? syscall_return_slowpath+0x31d/0x5e0 [ 50.557392] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 50.562392] ? prepare_exit_to_usermode+0x291/0x3b0 [ 50.567388] ? perf_trace_sys_enter+0xb10/0xb10 [ 50.572037] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.576875] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.582042] RIP: 0033:0x445bc9 [ 50.585203] Code: dd cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.604321] RSP: 002b:00007fff5cef0438 EFLAGS: 00000297 ORIG_RAX: 000000000000013f [ 50.612019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445bc9 [ 50.619273] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000004a79ef [ 50.626527] RBP: 0000000000010000 R08: 0000000000000001 R09: 0000000000000000 [ 50.633783] R10: 0000000000000000 R11: 0000000000000297 R12: ffffffffffffffff [ 50.641463] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 50.648731] CPU: 1 PID: 4484 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 50.657492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.664477] BTRFS: device fsid ecf6f2a3-2997-48af-b81e-1800920efd9a devid 135 transid 3229181211740946454 /dev/loop7 [ 50.666830] Call Trace: [ 50.666850] dump_stack+0x1c9/0x2b4 [ 50.666865] ? dump_stack_print_info.cold.2+0x52/0x52 [ 50.688864] ? save_stack+0xa9/0xd0 [ 50.692483] should_fail.cold.4+0xa/0x11 [ 50.696525] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 50.701618] ? trace_hardirqs_on+0xd/0x10 [ 50.705764] ? __put_user_ns+0x60/0x60 [ 50.709644] ? current_time+0x72/0x1b0 [ 50.713521] ? lock_downgrade+0x8f0/0x8f0 [ 50.717658] ? kasan_check_write+0x14/0x20 [ 50.721879] ? __lockdep_init_map+0x105/0x590 [ 50.726352] ? lock_acquire+0x1e4/0x540 [ 50.730312] ? fs_reclaim_acquire+0x20/0x20 [ 50.734611] ? lock_downgrade+0x8f0/0x8f0 [ 50.738749] ? check_same_owner+0x340/0x340 [ 50.743049] ? rcu_note_context_switch+0x730/0x730 [ 50.747955] ? kasan_check_read+0x11/0x20 [ 50.752081] __should_failslab+0x124/0x180 [ 50.756298] should_failslab+0x9/0x14 [ 50.760078] kmem_cache_alloc+0x2af/0x760 [ 50.764224] ? _raw_spin_unlock+0x22/0x30 [ 50.768352] ? __d_instantiate+0x522/0x750 [ 50.772568] __get_empty_filp+0x11b/0x620 [ 50.776695] ? d_instantiate+0x79/0xa0 [ 50.780561] ? proc_nr_files+0x60/0x60 [ 50.784439] ? do_raw_spin_lock+0xc1/0x200 [ 50.788661] ? kasan_check_read+0x11/0x20 [ 50.792789] ? do_raw_spin_unlock+0xa7/0x2f0 [ 50.797184] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 50.801809] ? kasan_check_write+0x14/0x20 [ 50.806021] ? do_raw_spin_lock+0xc1/0x200 [ 50.810351] alloc_file+0x29/0x3e0 [ 50.813871] ? clear_nlink.part.10+0x65/0x80 [ 50.818258] __shmem_file_setup+0x313/0x700 [ 50.822558] ? check_same_owner+0x340/0x340 [ 50.826871] ? shmem_fill_super+0xa50/0xa50 [ 50.831324] ? get_unused_fd_flags+0x122/0x1a0 [ 50.835882] ? __alloc_fd+0x710/0x710 [ 50.839666] shmem_file_setup+0x2f/0x40 [ 50.843625] __x64_sys_memfd_create+0x2af/0x4f0 [ 50.848273] ? memfd_fcntl+0x1e80/0x1e80 [ 50.852314] do_syscall_64+0x1b9/0x820 [ 50.856179] ? syscall_return_slowpath+0x5e0/0x5e0 [ 50.861087] ? syscall_return_slowpath+0x31d/0x5e0 [ 50.865995] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 50.870997] ? prepare_exit_to_usermode+0x291/0x3b0 [ 50.875991] ? perf_trace_sys_enter+0xb10/0xb10 [ 50.880646] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.885482] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.890650] RIP: 0033:0x445bc9 [ 50.893906] Code: dd cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.913022] RSP: 002b:00007fff5cef0438 EFLAGS: 00000297 ORIG_RAX: 000000000000013f executing program [ 50.920711] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445bc9 [ 50.927963] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000004a79ef [ 50.935210] RBP: 0000000000010000 R08: 0000000000000001 R09: 0000000000000000 [ 50.942458] R10: 0000000000000000 R11: 0000000000000297 R12: ffffffffffffffff [ 50.949714] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 50.974323] FAULT_INJECTION: forcing a failure. [ 50.974323] name failslab, interval 1, probability 0, space 0, times 0 [ 50.986150] CPU: 1 PID: 4490 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 50.994621] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.999474] FAULT_INJECTION: forcing a failure. [ 50.999474] name failslab, interval 1, probability 0, space 0, times 0 [ 51.003962] Call Trace: [ 51.003983] dump_stack+0x1c9/0x2b4 [ 51.003993] ? dump_stack_print_info.cold.2+0x52/0x52 [ 51.004016] ? lock_downgrade+0x8f0/0x8f0 [ 51.030696] should_fail.cold.4+0xa/0x11 [ 51.034736] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 51.039828] ? up_write+0x7b/0x220 [ 51.043346] ? up_read+0x110/0x110 [ 51.046874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.052396] ? __generic_file_write_iter+0x1bd/0x630 [ 51.057493] ? timespec64_trunc+0xea/0x180 [ 51.061709] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.067233] ? generic_file_write_iter+0x4a3/0x870 [ 51.072148] ? lock_acquire+0x1e4/0x540 [ 51.076102] ? fs_reclaim_acquire+0x20/0x20 [ 51.080404] ? lock_downgrade+0x8f0/0x8f0 [ 51.084533] ? check_same_owner+0x340/0x340 [ 51.088833] ? fsnotify+0xbac/0x14e0 [ 51.092527] ? rcu_note_context_switch+0x730/0x730 [ 51.097432] ? lock_downgrade+0x8f0/0x8f0 [ 51.101569] __should_failslab+0x124/0x180 [ 51.105790] should_failslab+0x9/0x14 [ 51.109570] kmem_cache_alloc+0x2af/0x760 [ 51.113697] getname_flags+0xd0/0x5a0 [ 51.117477] getname+0x19/0x20 [ 51.120651] do_sys_open+0x3a2/0x720 [ 51.124342] ? filp_open+0x80/0x80 [ 51.127862] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.133379] ? do_sys_ftruncate+0x44e/0x560 [ 51.137679] __x64_sys_open+0x7e/0xc0 [ 51.141466] do_syscall_64+0x1b9/0x820 [ 51.145331] ? syscall_return_slowpath+0x5e0/0x5e0 [ 51.150237] ? syscall_return_slowpath+0x31d/0x5e0 [ 51.155156] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 51.160249] ? prepare_exit_to_usermode+0x291/0x3b0 [ 51.165242] ? perf_trace_sys_enter+0xb10/0xb10 [ 51.169898] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.174721] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.179899] RIP: 0033:0x401cd0 [ 51.183066] Code: 01 f0 ff ff 0f 83 d0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 69 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 a4 0a 00 00 c3 48 83 ec 08 e8 5a 01 00 00 [ 51.202181] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 51.209868] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401cd0 [ 51.217115] RDX: 00007fff5cef059a RSI: 0000000000000002 RDI: 00007fff5cef0590 [ 51.224369] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000a [ 51.231615] R10: 0000000000000075 R11: 0000000000000246 R12: ffffffffffffffff [ 51.238876] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 51.246140] CPU: 0 PID: 4489 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 51.249933] FAULT_INJECTION: forcing a failure. [ 51.249933] name failslab, interval 1, probability 0, space 0, times 0 [ 51.254649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.275182] Call Trace: [ 51.277765] dump_stack+0x1c9/0x2b4 [ 51.281373] ? dump_stack_print_info.cold.2+0x52/0x52 [ 51.286546] ? lock_downgrade+0x8f0/0x8f0 [ 51.290676] should_fail.cold.4+0xa/0x11 [ 51.294717] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 51.299800] ? up_write+0x7b/0x220 [ 51.303318] ? up_read+0x110/0x110 [ 51.306848] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.312366] ? __generic_file_write_iter+0x1bd/0x630 [ 51.317451] ? timespec64_trunc+0xea/0x180 [ 51.321806] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.327344] ? generic_file_write_iter+0x4a3/0x870 [ 51.332269] ? lock_acquire+0x1e4/0x540 [ 51.336236] ? fs_reclaim_acquire+0x20/0x20 [ 51.340562] ? lock_downgrade+0x8f0/0x8f0 [ 51.344705] ? check_same_owner+0x340/0x340 [ 51.349012] ? fsnotify+0xbac/0x14e0 [ 51.352716] ? rcu_note_context_switch+0x730/0x730 [ 51.357634] ? lock_downgrade+0x8f0/0x8f0 [ 51.361777] __should_failslab+0x124/0x180 [ 51.366003] should_failslab+0x9/0x14 [ 51.369824] kmem_cache_alloc+0x2af/0x760 [ 51.373969] getname_flags+0xd0/0x5a0 [ 51.377760] getname+0x19/0x20 [ 51.380943] do_sys_open+0x3a2/0x720 [ 51.384642] ? filp_open+0x80/0x80 [ 51.388171] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.393697] ? do_sys_ftruncate+0x44e/0x560 [ 51.398023] __x64_sys_open+0x7e/0xc0 [ 51.401827] do_syscall_64+0x1b9/0x820 [ 51.405713] ? syscall_slow_exit_work+0x500/0x500 [ 51.410564] ? syscall_return_slowpath+0x5e0/0x5e0 [ 51.415481] ? syscall_return_slowpath+0x31d/0x5e0 [ 51.420400] ? prepare_exit_to_usermode+0x291/0x3b0 [ 51.425406] ? perf_trace_sys_enter+0xb10/0xb10 [ 51.430063] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.434909] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.440086] RIP: 0033:0x401cd0 [ 51.443257] Code: 01 f0 ff ff 0f 83 d0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 69 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 a4 0a 00 00 c3 48 83 ec 08 e8 5a 01 00 00 [ 51.462473] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 51.470168] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401cd0 [ 51.477432] RDX: 00007fff5cef059a RSI: 0000000000000002 RDI: 00007fff5cef0590 [ 51.484691] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000a [ 51.491955] R10: 0000000000000075 R11: 0000000000000246 R12: ffffffffffffffff [ 51.499212] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 51.506481] CPU: 1 PID: 4494 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 51.514975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.524329] Call Trace: [ 51.527049] dump_stack+0x1c9/0x2b4 [ 51.530703] ? dump_stack_print_info.cold.2+0x52/0x52 [ 51.531887] FAULT_INJECTION: forcing a failure. [ 51.531887] name failslab, interval 1, probability 0, space 0, times 0 [ 51.535914] should_fail.cold.4+0xa/0x11 [ 51.551128] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 51.556220] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.561225] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 51.565985] ? try_to_wake_up+0x10a/0x12b0 [ 51.570210] ? lock_downgrade+0x8f0/0x8f0 [ 51.574358] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 51.579885] ? trace_hardirqs_on+0x10/0x10 [ 51.584196] ? kasan_alloc_pages+0x38/0x40 [ 51.588429] ? get_page_from_freelist+0xfe4/0x4620 [ 51.593349] ? trace_hardirqs_on+0x10/0x10 [ 51.597575] ? unwind_get_return_address+0x61/0xa0 [ 51.602495] __should_failslab+0x124/0x180 [ 51.606719] should_failslab+0x9/0x14 [ 51.610506] kmem_cache_alloc+0x47/0x760 [ 51.614557] ? trace_hardirqs_on+0x10/0x10 [ 51.618782] xas_alloc+0x38a/0x490 [ 51.622309] ? minmax_running_min+0x690/0x690 [ 51.626795] xas_create+0x3ae/0x1150 [ 51.630495] ? fs_reclaim_acquire+0x20/0x20 [ 51.634818] ? xas_descend+0x5f0/0x5f0 [ 51.638694] ? lock_acquire+0x1e4/0x540 [ 51.642656] ? percpu_ref_tryget_live+0x143/0x440 [ 51.647487] ? lock_downgrade+0x8f0/0x8f0 [ 51.651626] ? lock_release+0xa30/0xa30 [ 51.655597] ? __alloc_pages_nodemask+0x6e3/0xdb0 [ 51.660437] ? trace_hardirqs_on+0xd/0x10 [ 51.664582] ? try_charge+0xbc2/0x1680 [ 51.668457] xas_store+0xce/0x1720 [ 51.671984] ? xas_find_tagged+0x1440/0x1440 [ 51.676381] ? lock_acquire+0x1e4/0x540 [ 51.680341] ? shmem_add_to_page_cache+0x8b9/0x1450 [ 51.685345] ? xa_find_after+0x9a0/0x9a0 [ 51.689393] ? percpu_ref_put_many+0x119/0x240 [ 51.693964] ? lock_downgrade+0x8f0/0x8f0 [ 51.698100] ? xas_find_conflict+0x360/0x8d0 [ 51.702496] ? kasan_check_write+0x14/0x20 [ 51.706718] ? do_raw_spin_lock+0xc1/0x200 [ 51.710945] shmem_add_to_page_cache+0x98e/0x1450 [ 51.715779] ? shmem_write_end+0x9a0/0x9a0 [ 51.720014] ? mem_cgroup_try_charge+0x548/0xa70 [ 51.724760] ? mem_cgroup_protected+0xa60/0xa60 [ 51.729424] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.734958] ? shmem_alloc_and_acct_page+0x31a/0x820 [ 51.740050] ? shmem_getattr+0x2c0/0x2c0 [ 51.744102] ? trace_hardirqs_on+0x10/0x10 [ 51.748342] ? __wake_up_common_lock+0x1d0/0x330 [ 51.753101] shmem_getpage_gfp+0xaad/0x3ec0 [ 51.757429] ? shmem_writepage+0x13a0/0x13a0 [ 51.761826] ? kasan_check_write+0x14/0x20 [ 51.766045] ? do_raw_spin_lock+0xc1/0x200 [ 51.770902] ? trace_hardirqs_off+0xd/0x10 [ 51.775136] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 51.780228] ? trace_hardirqs_on+0x10/0x10 [ 51.784474] ? migrate_swap_stop+0x850/0x850 [ 51.788875] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.793882] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 51.798627] ? trace_hardirqs_on+0x10/0x10 [ 51.802851] ? lock_acquire+0x1e4/0x540 [ 51.806811] ? is_bpf_text_address+0xae/0x170 [ 51.811306] ? lock_downgrade+0x8f0/0x8f0 [ 51.815443] ? lock_release+0xa30/0xa30 [ 51.819408] ? trace_hardirqs_on+0x10/0x10 [ 51.823633] ? trace_hardirqs_on+0x10/0x10 [ 51.827856] ? need_to_create_worker+0x280/0x280 [ 51.832602] ? kasan_check_read+0x11/0x20 [ 51.836739] ? do_raw_spin_unlock+0xa7/0x2f0 [ 51.841136] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.846140] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 51.850890] ? trace_hardirqs_on+0x10/0x10 [ 51.855111] ? lock_acquire+0x1e4/0x540 [ 51.859082] ? is_bpf_text_address+0xae/0x170 [ 51.863654] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 51.868669] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 51.873429] ? trace_hardirqs_on+0x10/0x10 [ 51.877650] ? lock_downgrade+0x8f0/0x8f0 [ 51.881788] ? trace_hardirqs_on+0x10/0x10 [ 51.886012] ? kasan_check_read+0x11/0x20 [ 51.890150] ? lock_acquire+0x1e4/0x540 [ 51.894111] ? simple_xattr_get+0x106/0x180 [ 51.898426] ? current_time+0x72/0x1b0 [ 51.902313] ? lock_downgrade+0x8f0/0x8f0 [ 51.906450] ? kasan_check_read+0x11/0x20 [ 51.910588] ? lock_release+0xa30/0xa30 [ 51.914643] ? kasan_check_write+0x14/0x20 [ 51.918864] ? do_raw_spin_lock+0xc1/0x200 [ 51.923099] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.928637] ? iov_iter_fault_in_readable+0x23d/0x460 [ 51.933813] ? copy_page_from_iter+0x890/0x890 [ 51.938395] ? __sanitizer_cov_trace_const_cmp4+0x1d/0x20 [ 51.943919] ? ktime_get_coarse_real_ts64+0x243/0x3a0 [ 51.949794] shmem_write_begin+0x10a/0x1e0 [ 51.954034] generic_perform_write+0x3ae/0x6c0 [ 51.958611] ? add_page_wait_queue+0x2c0/0x2c0 [ 51.963181] ? file_update_time+0xe4/0x640 [ 51.967403] ? current_time+0x1b0/0x1b0 [ 51.971370] ? down_write+0x8f/0x130 [ 51.975074] __generic_file_write_iter+0x26e/0x630 [ 51.979992] ? timespec64_trunc+0xea/0x180 [ 51.984217] generic_file_write_iter+0x438/0x870 [ 51.988970] ? __generic_file_write_iter+0x630/0x630 [ 51.994064] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.999587] ? iov_iter_init+0xc9/0x1f0 [ 52.003549] __vfs_write+0x6c6/0x9f0 [ 52.007253] ? kernel_read+0x120/0x120 [ 52.011129] ? lock_release+0xa30/0xa30 [ 52.015089] ? check_same_owner+0x340/0x340 [ 52.019396] ? __fget_light+0x2f7/0x440 [ 52.023358] ? fget_raw+0x20/0x20 [ 52.026804] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.032336] ? __sb_start_write+0x17f/0x300 [ 52.036643] vfs_write+0x1fc/0x560 [ 52.040172] ksys_pwrite64+0x181/0x1b0 [ 52.044047] ? __ia32_sys_pread64+0xf0/0xf0 [ 52.048358] ? __sb_end_write+0xac/0xe0 [ 52.052417] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.057955] ? do_sys_ftruncate+0x44e/0x560 [ 52.062268] __x64_sys_pwrite64+0x97/0xf0 [ 52.066404] do_syscall_64+0x1b9/0x820 [ 52.070282] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.075201] ? syscall_return_slowpath+0x31d/0x5e0 [ 52.080125] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.085130] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.090157] ? perf_trace_sys_enter+0xb10/0xb10 [ 52.094913] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.099767] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.104941] RIP: 0033:0x401d33 [ 52.108112] Code: ff 0f 83 70 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 9d 69 2d 00 00 75 17 49 89 ca b8 12 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 41 0a 00 00 c3 48 83 ec 08 e8 f7 00 00 00 executing program executing program executing program executing program executing program [ 52.127324] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 52.135020] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401d33 [ 52.142369] RDX: 00000000000000ca RSI: 0000000020000340 RDI: 0000000000000005 [ 52.149625] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 52.156883] R10: 0000000000010000 R11: 0000000000000246 R12: ffffffffffffffff [ 52.164149] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 52.171430] CPU: 0 PID: 4496 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 52.179925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.189298] Call Trace: [ 52.191890] dump_stack+0x1c9/0x2b4 [ 52.193270] FAULT_INJECTION: forcing a failure. [ 52.193270] name failslab, interval 1, probability 0, space 0, times 0 [ 52.195535] ? dump_stack_print_info.cold.2+0x52/0x52 [ 52.211880] should_fail.cold.4+0xa/0x11 [ 52.215931] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 52.221109] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.226128] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 52.230875] ? try_to_wake_up+0x10a/0x12b0 [ 52.235098] ? lock_downgrade+0x8f0/0x8f0 [ 52.239237] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.244774] ? trace_hardirqs_on+0x10/0x10 [ 52.249013] ? kasan_alloc_pages+0x38/0x40 [ 52.253236] ? get_page_from_freelist+0xfe4/0x4620 [ 52.258164] ? trace_hardirqs_on+0x10/0x10 [ 52.262391] ? unwind_get_return_address+0x61/0xa0 [ 52.267329] __should_failslab+0x124/0x180 [ 52.271555] should_failslab+0x9/0x14 [ 52.275345] kmem_cache_alloc+0x47/0x760 [ 52.279395] ? trace_hardirqs_on+0x10/0x10 [ 52.283619] xas_alloc+0x38a/0x490 [ 52.287150] ? minmax_running_min+0x690/0x690 [ 52.291639] xas_create+0x3ae/0x1150 [ 52.295341] ? fs_reclaim_acquire+0x20/0x20 [ 52.299653] ? xas_descend+0x5f0/0x5f0 [ 52.303531] ? lock_acquire+0x1e4/0x540 [ 52.307492] ? percpu_ref_tryget_live+0x143/0x440 [ 52.312323] ? lock_downgrade+0x8f0/0x8f0 [ 52.316478] ? lock_release+0xa30/0xa30 [ 52.320440] ? __alloc_pages_nodemask+0x6e3/0xdb0 [ 52.325282] ? trace_hardirqs_on+0xd/0x10 [ 52.329428] ? try_charge+0xbc2/0x1680 [ 52.333304] xas_store+0xce/0x1720 [ 52.336829] ? xas_find_tagged+0x1440/0x1440 [ 52.341239] ? lock_acquire+0x1e4/0x540 [ 52.345213] ? shmem_add_to_page_cache+0x8b9/0x1450 [ 52.350216] ? xa_find_after+0x9a0/0x9a0 [ 52.354263] ? percpu_ref_put_many+0x119/0x240 [ 52.358832] ? lock_downgrade+0x8f0/0x8f0 [ 52.362966] ? xas_find_conflict+0x360/0x8d0 [ 52.367363] ? kasan_check_write+0x14/0x20 [ 52.371626] ? do_raw_spin_lock+0xc1/0x200 [ 52.375860] shmem_add_to_page_cache+0x98e/0x1450 [ 52.380781] ? shmem_write_end+0x9a0/0x9a0 [ 52.385004] ? mem_cgroup_try_charge+0x548/0xa70 [ 52.389749] ? mem_cgroup_protected+0xa60/0xa60 [ 52.394411] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.399936] ? shmem_alloc_and_acct_page+0x31a/0x820 [ 52.405031] ? shmem_getattr+0x2c0/0x2c0 [ 52.409081] ? trace_hardirqs_on+0x10/0x10 [ 52.413313] ? __wake_up_common_lock+0x1d0/0x330 [ 52.418061] shmem_getpage_gfp+0xaad/0x3ec0 [ 52.422389] ? shmem_writepage+0x13a0/0x13a0 [ 52.426788] ? kasan_check_write+0x14/0x20 [ 52.431009] ? do_raw_spin_lock+0xc1/0x200 [ 52.435234] ? trace_hardirqs_off+0xd/0x10 [ 52.439456] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 52.444545] ? trace_hardirqs_on+0x10/0x10 [ 52.448769] ? migrate_swap_stop+0x850/0x850 [ 52.453339] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.458342] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 52.463086] ? trace_hardirqs_on+0x10/0x10 [ 52.467307] ? lock_acquire+0x1e4/0x540 [ 52.471267] ? is_bpf_text_address+0xae/0x170 [ 52.475752] ? lock_downgrade+0x8f0/0x8f0 [ 52.479887] ? lock_release+0xa30/0xa30 [ 52.483862] ? trace_hardirqs_on+0x10/0x10 [ 52.488097] ? trace_hardirqs_on+0x10/0x10 [ 52.492317] ? need_to_create_worker+0x280/0x280 [ 52.497072] ? kasan_check_read+0x11/0x20 [ 52.501209] ? do_raw_spin_unlock+0xa7/0x2f0 [ 52.505609] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.510621] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 52.515366] ? trace_hardirqs_on+0x10/0x10 [ 52.519587] ? lock_acquire+0x1e4/0x540 [ 52.523568] ? is_bpf_text_address+0xae/0x170 [ 52.528051] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.533065] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 52.537811] ? trace_hardirqs_on+0x10/0x10 [ 52.542032] ? lock_downgrade+0x8f0/0x8f0 [ 52.546168] ? trace_hardirqs_on+0x10/0x10 [ 52.550392] ? kasan_check_read+0x11/0x20 [ 52.554534] ? lock_acquire+0x1e4/0x540 [ 52.558493] ? simple_xattr_get+0x106/0x180 [ 52.562806] ? current_time+0x72/0x1b0 [ 52.566681] ? lock_downgrade+0x8f0/0x8f0 [ 52.570825] ? kasan_check_read+0x11/0x20 [ 52.574962] ? lock_release+0xa30/0xa30 [ 52.578925] ? kasan_check_write+0x14/0x20 [ 52.583146] ? do_raw_spin_lock+0xc1/0x200 [ 52.587371] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.592897] ? iov_iter_fault_in_readable+0x23d/0x460 [ 52.598074] ? copy_page_from_iter+0x890/0x890 [ 52.602659] ? __sanitizer_cov_trace_const_cmp4+0x1d/0x20 [ 52.608184] ? ktime_get_coarse_real_ts64+0x243/0x3a0 [ 52.613362] shmem_write_begin+0x10a/0x1e0 [ 52.617588] generic_perform_write+0x3ae/0x6c0 [ 52.622162] ? add_page_wait_queue+0x2c0/0x2c0 [ 52.626745] ? file_update_time+0xe4/0x640 [ 52.630967] ? current_time+0x1b0/0x1b0 [ 52.634935] ? down_write+0x8f/0x130 [ 52.638650] __generic_file_write_iter+0x26e/0x630 [ 52.643567] ? timespec64_trunc+0xea/0x180 [ 52.647795] generic_file_write_iter+0x438/0x870 [ 52.652542] ? __generic_file_write_iter+0x630/0x630 [ 52.657634] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.663223] ? iov_iter_init+0xc9/0x1f0 [ 52.667205] __vfs_write+0x6c6/0x9f0 [ 52.670906] ? kernel_read+0x120/0x120 [ 52.674783] ? lock_release+0xa30/0xa30 [ 52.678745] ? check_same_owner+0x340/0x340 [ 52.683050] ? __fget_light+0x2f7/0x440 [ 52.687009] ? fget_raw+0x20/0x20 [ 52.690456] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.695982] ? __sb_start_write+0x17f/0x300 [ 52.700290] vfs_write+0x1fc/0x560 [ 52.703820] ksys_pwrite64+0x181/0x1b0 [ 52.707700] ? __ia32_sys_pread64+0xf0/0xf0 [ 52.712008] ? __sb_end_write+0xac/0xe0 [ 52.715969] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.721494] ? do_sys_ftruncate+0x44e/0x560 [ 52.725805] __x64_sys_pwrite64+0x97/0xf0 [ 52.729943] do_syscall_64+0x1b9/0x820 [ 52.733819] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.738738] ? syscall_return_slowpath+0x31d/0x5e0 [ 52.743656] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.748671] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.753707] ? perf_trace_sys_enter+0xb10/0xb10 [ 52.758376] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.763208] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.768394] RIP: 0033:0x401d33 [ 52.771567] Code: ff 0f 83 70 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 9d 69 2d 00 00 75 17 49 89 ca b8 12 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 41 0a 00 00 c3 48 83 ec 08 e8 f7 00 00 00 [ 52.790779] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 52.798563] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401d33 [ 52.805818] RDX: 00000000000000ca RSI: 0000000020000340 RDI: 0000000000000005 [ 52.813073] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 52.820331] R10: 0000000000010000 R11: 0000000000000246 R12: ffffffffffffffff [ 52.827585] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 52.834858] CPU: 1 PID: 4495 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 52.842344] FAULT_INJECTION: forcing a failure. [ 52.842344] name failslab, interval 1, probability 0, space 0, times 0 [ 52.843352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.863872] Call Trace: [ 52.866451] dump_stack+0x1c9/0x2b4 [ 52.870067] ? dump_stack_print_info.cold.2+0x52/0x52 [ 52.875248] should_fail.cold.4+0xa/0x11 [ 52.879300] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 52.884393] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.889486] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 52.894234] ? try_to_wake_up+0x10a/0x12b0 [ 52.898463] ? lock_downgrade+0x8f0/0x8f0 [ 52.902603] ? trace_hardirqs_on+0x10/0x10 [ 52.906827] ? __update_load_avg_blocked_se.isra.34+0x460/0x460 [ 52.912876] ? __update_load_avg_blocked_se.isra.34+0x460/0x460 [ 52.918922] ? do_raw_spin_lock+0xc1/0x200 [ 52.923150] ? update_load_avg+0x2de/0x2590 [ 52.927468] ? attach_entity_load_avg+0x860/0x860 [ 52.932303] __should_failslab+0x124/0x180 [ 52.936536] should_failslab+0x9/0x14 [ 52.940327] kmem_cache_alloc+0x47/0x760 [ 52.944468] ? trace_hardirqs_on+0x10/0x10 [ 52.948781] xas_alloc+0x38a/0x490 [ 52.952311] ? minmax_running_min+0x690/0x690 [ 52.956809] xas_create+0x3ae/0x1150 [ 52.960523] ? fs_reclaim_acquire+0x20/0x20 [ 52.964836] ? xas_descend+0x5f0/0x5f0 [ 52.968712] ? lock_acquire+0x1e4/0x540 [ 52.972673] ? percpu_ref_tryget_live+0x143/0x440 [ 52.977504] ? lock_downgrade+0x8f0/0x8f0 [ 52.981651] ? lock_release+0xa30/0xa30 [ 52.985612] ? __alloc_pages_nodemask+0x6e3/0xdb0 [ 52.990448] ? trace_hardirqs_on+0xd/0x10 [ 52.994583] ? try_charge+0xbc2/0x1680 [ 52.998640] xas_store+0xce/0x1720 [ 53.002344] ? xas_find_tagged+0x1440/0x1440 [ 53.006759] ? lock_acquire+0x1e4/0x540 [ 53.010735] ? shmem_add_to_page_cache+0x8b9/0x1450 [ 53.015738] ? xa_find_after+0x9a0/0x9a0 [ 53.019787] ? percpu_ref_put_many+0x119/0x240 [ 53.024357] ? lock_downgrade+0x8f0/0x8f0 [ 53.028500] ? xas_find_conflict+0x360/0x8d0 [ 53.032898] ? kasan_check_write+0x14/0x20 [ 53.037133] ? do_raw_spin_lock+0xc1/0x200 [ 53.041619] shmem_add_to_page_cache+0x98e/0x1450 [ 53.046453] ? shmem_write_end+0x9a0/0x9a0 [ 53.050765] ? mem_cgroup_try_charge+0x548/0xa70 [ 53.055523] ? mem_cgroup_protected+0xa60/0xa60 [ 53.060187] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.065712] ? shmem_alloc_and_acct_page+0x31a/0x820 [ 53.070809] ? shmem_getattr+0x2c0/0x2c0 [ 53.074860] ? dequeue_task_fair+0xa10/0xa10 [ 53.079265] shmem_getpage_gfp+0xaad/0x3ec0 [ 53.083575] ? check_preempt_curr+0x1ec/0x3a0 [ 53.088076] ? shmem_writepage+0x13a0/0x13a0 [ 53.092469] ? kthread_data+0x58/0xc0 [ 53.096260] ? trace_hardirqs_off+0xd/0x10 [ 53.100482] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 53.105576] ? trace_hardirqs_on+0x10/0x10 [ 53.109801] ? migrate_swap_stop+0x850/0x850 [ 53.114203] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.119212] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.123967] ? trace_hardirqs_on+0x10/0x10 [ 53.128201] ? lock_acquire+0x1e4/0x540 [ 53.132166] ? is_bpf_text_address+0xae/0x170 [ 53.136648] ? lock_downgrade+0x8f0/0x8f0 [ 53.140785] ? lock_release+0xa30/0xa30 [ 53.144752] ? trace_hardirqs_on+0x10/0x10 [ 53.148985] ? trace_hardirqs_on+0x10/0x10 [ 53.153208] ? need_to_create_worker+0x280/0x280 [ 53.157951] ? do_raw_spin_unlock+0xa7/0x2f0 [ 53.162348] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.167354] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.172118] ? trace_hardirqs_on+0x10/0x10 [ 53.176340] ? is_bpf_text_address+0xae/0x170 [ 53.180825] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.185828] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.190575] ? trace_hardirqs_on+0x10/0x10 [ 53.194800] ? lock_downgrade+0x8f0/0x8f0 [ 53.198940] ? trace_hardirqs_on+0x10/0x10 [ 53.203170] ? kasan_check_read+0x11/0x20 [ 53.207307] ? lock_acquire+0x1e4/0x540 [ 53.211278] ? simple_xattr_get+0x106/0x180 [ 53.215676] ? current_time+0x72/0x1b0 [ 53.219554] ? lock_downgrade+0x8f0/0x8f0 [ 53.223700] ? kasan_check_read+0x11/0x20 [ 53.227846] ? lock_release+0xa30/0xa30 [ 53.231808] ? kasan_check_write+0x14/0x20 [ 53.236029] ? do_raw_spin_lock+0xc1/0x200 [ 53.240254] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.245782] ? iov_iter_fault_in_readable+0x23d/0x460 [ 53.250968] ? copy_page_from_iter+0x890/0x890 [ 53.255548] ? __sanitizer_cov_trace_const_cmp4+0x1d/0x20 [ 53.261087] ? ktime_get_coarse_real_ts64+0x243/0x3a0 [ 53.266278] shmem_write_begin+0x10a/0x1e0 [ 53.270505] generic_perform_write+0x3ae/0x6c0 [ 53.275083] ? add_page_wait_queue+0x2c0/0x2c0 [ 53.279652] ? file_update_time+0xe4/0x640 [ 53.284051] ? current_time+0x1b0/0x1b0 [ 53.288026] ? down_write+0x8f/0x130 [ 53.291744] __generic_file_write_iter+0x26e/0x630 [ 53.296674] ? timespec64_trunc+0xea/0x180 [ 53.300900] generic_file_write_iter+0x438/0x870 [ 53.305648] ? __generic_file_write_iter+0x630/0x630 [ 53.310742] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.316270] ? iov_iter_init+0xc9/0x1f0 [ 53.320246] __vfs_write+0x6c6/0x9f0 [ 53.323949] ? kernel_read+0x120/0x120 [ 53.327832] ? lock_release+0xa30/0xa30 [ 53.331795] ? check_same_owner+0x340/0x340 [ 53.336102] ? __fget_light+0x2f7/0x440 [ 53.340934] ? fget_raw+0x20/0x20 [ 53.344378] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.349902] ? __sb_start_write+0x17f/0x300 [ 53.354210] vfs_write+0x1fc/0x560 [ 53.357741] ksys_pwrite64+0x181/0x1b0 [ 53.361616] ? __ia32_sys_pread64+0xf0/0xf0 [ 53.365928] ? __sb_end_write+0xac/0xe0 [ 53.370042] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.375567] ? do_sys_ftruncate+0x44e/0x560 [ 53.379880] __x64_sys_pwrite64+0x97/0xf0 [ 53.384016] do_syscall_64+0x1b9/0x820 [ 53.387899] ? syscall_return_slowpath+0x5e0/0x5e0 [ 53.392818] ? syscall_return_slowpath+0x31d/0x5e0 [ 53.397736] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 53.402738] ? prepare_exit_to_usermode+0x291/0x3b0 [ 53.407743] ? perf_trace_sys_enter+0xb10/0xb10 [ 53.412401] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.417244] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.422421] RIP: 0033:0x401d33 [ 53.425597] Code: ff 0f 83 70 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 9d 69 2d 00 00 75 17 49 89 ca b8 12 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 41 0a 00 00 c3 48 83 ec 08 e8 f7 00 00 00 [ 53.444800] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 53.452495] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401d33 [ 53.459749] RDX: 00000000000000ca RSI: 0000000020000340 RDI: 0000000000000005 [ 53.467006] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 53.474260] R10: 0000000000010000 R11: 0000000000000246 R12: ffffffffffffffff [ 53.481526] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 53.488795] CPU: 0 PID: 4499 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 53.491205] FAULT_INJECTION: forcing a failure. [ 53.491205] name failslab, interval 1, probability 0, space 0, times 0 [ 53.497283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.497288] Call Trace: [ 53.497306] dump_stack+0x1c9/0x2b4 [ 53.497327] ? dump_stack_print_info.cold.2+0x52/0x52 [ 53.529254] should_fail.cold.4+0xa/0x11 [ 53.533312] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 53.538403] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.543415] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.548170] ? try_to_wake_up+0x10a/0x12b0 [ 53.552479] ? lock_downgrade+0x8f0/0x8f0 [ 53.556621] ? trace_hardirqs_on+0x10/0x10 [ 53.560865] ? do_raw_spin_unlock+0xa7/0x2f0 [ 53.565260] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 53.569832] ? trace_hardirqs_on+0x10/0x10 [ 53.574058] ? kasan_check_write+0x14/0x20 [ 53.578278] ? do_raw_spin_lock+0xc1/0x200 [ 53.582505] ? trace_hardirqs_on+0x10/0x10 [ 53.586738] ? unwind_get_return_address+0x61/0xa0 [ 53.591658] __should_failslab+0x124/0x180 [ 53.595881] should_failslab+0x9/0x14 [ 53.599677] kmem_cache_alloc+0x47/0x760 [ 53.603738] ? trace_hardirqs_on+0x10/0x10 [ 53.607972] xas_alloc+0x38a/0x490 [ 53.611501] ? minmax_running_min+0x690/0x690 [ 53.615997] xas_create+0x3ae/0x1150 [ 53.619700] ? fs_reclaim_acquire+0x20/0x20 [ 53.624017] ? xas_descend+0x5f0/0x5f0 [ 53.627898] ? lock_acquire+0x1e4/0x540 [ 53.631859] ? percpu_ref_tryget_live+0x143/0x440 [ 53.637648] ? lock_downgrade+0x8f0/0x8f0 [ 53.641784] ? lock_release+0xa30/0xa30 [ 53.645763] ? __alloc_pages_nodemask+0x6e3/0xdb0 [ 53.650594] ? trace_hardirqs_on+0xd/0x10 [ 53.654728] ? try_charge+0xbc2/0x1680 [ 53.658602] xas_store+0xce/0x1720 [ 53.662145] ? xas_find_tagged+0x1440/0x1440 [ 53.666540] ? lock_acquire+0x1e4/0x540 [ 53.670503] ? shmem_add_to_page_cache+0x8b9/0x1450 [ 53.675507] ? xa_find_after+0x9a0/0x9a0 [ 53.679555] ? percpu_ref_put_many+0x119/0x240 [ 53.684125] ? lock_downgrade+0x8f0/0x8f0 [ 53.688260] ? xas_find_conflict+0x360/0x8d0 [ 53.692657] ? kasan_check_write+0x14/0x20 [ 53.696967] ? do_raw_spin_lock+0xc1/0x200 [ 53.701191] shmem_add_to_page_cache+0x98e/0x1450 [ 53.706116] ? shmem_write_end+0x9a0/0x9a0 [ 53.710340] ? mem_cgroup_try_charge+0x548/0xa70 [ 53.715083] ? mem_cgroup_protected+0xa60/0xa60 [ 53.719743] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.725267] ? shmem_alloc_and_acct_page+0x31a/0x820 [ 53.730360] ? shmem_getattr+0x2c0/0x2c0 [ 53.734411] ? trace_hardirqs_on+0x10/0x10 [ 53.738637] ? __wake_up_common_lock+0x1d0/0x330 [ 53.743382] shmem_getpage_gfp+0xaad/0x3ec0 [ 53.747699] ? shmem_writepage+0x13a0/0x13a0 [ 53.752098] ? kasan_check_write+0x14/0x20 [ 53.756321] ? do_raw_spin_lock+0xc1/0x200 [ 53.760547] ? trace_hardirqs_off+0xd/0x10 [ 53.764766] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 53.769886] ? trace_hardirqs_on+0x10/0x10 [ 53.774111] ? migrate_swap_stop+0x850/0x850 [ 53.778511] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.783526] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.788271] ? trace_hardirqs_on+0x10/0x10 [ 53.792527] ? lock_acquire+0x1e4/0x540 [ 53.796488] ? is_bpf_text_address+0xae/0x170 [ 53.800993] ? lock_downgrade+0x8f0/0x8f0 [ 53.805138] ? lock_release+0xa30/0xa30 [ 53.809111] ? trace_hardirqs_on+0x10/0x10 [ 53.813345] ? trace_hardirqs_on+0x10/0x10 [ 53.817575] ? need_to_create_worker+0x280/0x280 [ 53.822321] ? do_raw_spin_unlock+0xa7/0x2f0 [ 53.826721] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.831724] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.836470] ? trace_hardirqs_on+0x10/0x10 [ 53.840691] ? lock_acquire+0x1e4/0x540 [ 53.844651] ? is_bpf_text_address+0xae/0x170 [ 53.849151] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.854156] ? bpf_prog_kallsyms_find+0xde/0x4c0 [ 53.858907] ? trace_hardirqs_on+0x10/0x10 [ 53.863129] ? lock_downgrade+0x8f0/0x8f0 [ 53.867281] ? trace_hardirqs_on+0x10/0x10 [ 53.871507] ? kasan_check_read+0x11/0x20 [ 53.875647] ? lock_acquire+0x1e4/0x540 [ 53.879607] ? simple_xattr_get+0x106/0x180 [ 53.883924] ? current_time+0x72/0x1b0 [ 53.887802] ? lock_downgrade+0x8f0/0x8f0 [ 53.891941] ? kasan_check_read+0x11/0x20 [ 53.896092] ? lock_release+0xa30/0xa30 [ 53.900061] ? kasan_check_write+0x14/0x20 [ 53.904285] ? do_raw_spin_lock+0xc1/0x200 [ 53.908514] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.914044] ? iov_iter_fault_in_readable+0x23d/0x460 [ 53.919225] ? copy_page_from_iter+0x890/0x890 [ 53.923815] ? __sanitizer_cov_trace_const_cmp4+0x1d/0x20 [ 53.929341] ? ktime_get_coarse_real_ts64+0x243/0x3a0 [ 53.934524] shmem_write_begin+0x10a/0x1e0 [ 53.938751] generic_perform_write+0x3ae/0x6c0 [ 53.943327] ? add_page_wait_queue+0x2c0/0x2c0 [ 53.947909] ? file_update_time+0xe4/0x640 [ 53.952133] ? current_time+0x1b0/0x1b0 [ 53.956110] ? down_write+0x8f/0x130 [ 53.959814] __generic_file_write_iter+0x26e/0x630 [ 53.964732] ? timespec64_trunc+0xea/0x180 [ 53.968974] generic_file_write_iter+0x438/0x870 [ 53.973720] ? __generic_file_write_iter+0x630/0x630 [ 53.978816] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.984352] ? iov_iter_init+0xc9/0x1f0 [ 53.988326] __vfs_write+0x6c6/0x9f0 [ 53.992031] ? kernel_read+0x120/0x120 [ 53.995915] ? lock_release+0xa30/0xa30 [ 53.999876] ? check_same_owner+0x340/0x340 [ 54.004199] ? __fget_light+0x2f7/0x440 [ 54.008173] ? fget_raw+0x20/0x20 [ 54.011621] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.017257] ? __sb_start_write+0x17f/0x300 [ 54.021567] vfs_write+0x1fc/0x560 [ 54.025100] ksys_pwrite64+0x181/0x1b0 [ 54.028976] ? __ia32_sys_pread64+0xf0/0xf0 [ 54.033289] ? __sb_end_write+0xac/0xe0 [ 54.037253] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.042891] ? do_sys_ftruncate+0x44e/0x560 [ 54.047201] __x64_sys_pwrite64+0x97/0xf0 [ 54.051340] do_syscall_64+0x1b9/0x820 [ 54.055220] ? syscall_slow_exit_work+0x500/0x500 [ 54.060052] ? syscall_return_slowpath+0x5e0/0x5e0 [ 54.064973] ? syscall_return_slowpath+0x31d/0x5e0 [ 54.069893] ? prepare_exit_to_usermode+0x291/0x3b0 [ 54.075014] ? perf_trace_sys_enter+0xb10/0xb10 [ 54.079673] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.084519] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.089696] RIP: 0033:0x401d33 [ 54.092868] Code: ff 0f 83 70 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 9d 69 2d 00 00 75 17 49 89 ca b8 12 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 41 0a 00 00 c3 48 83 ec 08 e8 f7 00 00 00 [ 54.112069] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 54.125843] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401d33 [ 54.133100] RDX: 00000000000000ca RSI: 0000000020000340 RDI: 0000000000000005 [ 54.140362] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 54.147627] R10: 0000000000010000 R11: 0000000000000246 R12: ffffffffffffffff [ 54.154882] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 54.162149] CPU: 1 PID: 4497 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 54.168400] FAULT_INJECTION: forcing a failure. [ 54.168400] name failslab, interval 1, probability 0, space 0, times 0 [ 54.170638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.170642] Call Trace: [ 54.170661] dump_stack+0x1c9/0x2b4 [ 54.170686] ? dump_stack_print_info.cold.2+0x52/0x52 [ 54.202556] ? save_stack+0xa9/0xd0 [ 54.206176] should_fail.cold.4+0xa/0x11 [ 54.210249] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 54.215345] ? trace_hardirqs_on+0xd/0x10 [ 54.219488] ? __put_user_ns+0x60/0x60 [ 54.223370] ? current_time+0x72/0x1b0 [ 54.227247] ? lock_downgrade+0x8f0/0x8f0 [ 54.231386] ? kasan_check_write+0x14/0x20 [ 54.235620] ? __lockdep_init_map+0x105/0x590 [ 54.240111] ? lock_acquire+0x1e4/0x540 [ 54.244094] ? fs_reclaim_acquire+0x20/0x20 [ 54.248491] ? lock_downgrade+0x8f0/0x8f0 [ 54.252722] ? check_same_owner+0x340/0x340 [ 54.257035] ? rcu_note_context_switch+0x730/0x730 [ 54.261952] ? kasan_check_read+0x11/0x20 [ 54.266114] __should_failslab+0x124/0x180 [ 54.270450] should_failslab+0x9/0x14 [ 54.274249] kmem_cache_alloc+0x2af/0x760 [ 54.278388] ? _raw_spin_unlock+0x22/0x30 [ 54.282524] ? __d_instantiate+0x522/0x750 [ 54.286767] __get_empty_filp+0x11b/0x620 [ 54.290902] ? d_instantiate+0x79/0xa0 [ 54.294777] ? proc_nr_files+0x60/0x60 [ 54.298650] ? do_raw_spin_lock+0xc1/0x200 [ 54.302876] ? kasan_check_read+0x11/0x20 [ 54.307024] ? do_raw_spin_unlock+0xa7/0x2f0 [ 54.311421] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 54.315991] ? kasan_check_write+0x14/0x20 [ 54.320221] ? do_raw_spin_lock+0xc1/0x200 [ 54.324450] alloc_file+0x29/0x3e0 [ 54.327979] ? clear_nlink.part.10+0x65/0x80 [ 54.332378] __shmem_file_setup+0x313/0x700 [ 54.336686] ? check_same_owner+0x340/0x340 [ 54.340998] ? shmem_fill_super+0xa50/0xa50 [ 54.345310] ? get_unused_fd_flags+0x122/0x1a0 [ 54.349880] ? __alloc_fd+0x710/0x710 [ 54.353672] shmem_file_setup+0x2f/0x40 [ 54.357637] __x64_sys_memfd_create+0x2af/0x4f0 [ 54.362295] ? memfd_fcntl+0x1e80/0x1e80 [ 54.366349] do_syscall_64+0x1b9/0x820 [ 54.370238] ? syscall_return_slowpath+0x5e0/0x5e0 [ 54.375167] ? syscall_return_slowpath+0x31d/0x5e0 [ 54.380101] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 54.385109] ? prepare_exit_to_usermode+0x291/0x3b0 [ 54.390114] ? perf_trace_sys_enter+0xb10/0xb10 [ 54.394772] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.399707] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.404894] RIP: 0033:0x445bc9 [ 54.408066] Code: dd cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 54.427274] RSP: 002b:00007fff5cef0438 EFLAGS: 00000297 ORIG_RAX: 000000000000013f [ 54.434969] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445bc9 executing program executing program [ 54.442312] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000004a79ef [ 54.449578] RBP: 0000000000010000 R08: 0000000000000001 R09: 0000000000000000 [ 54.456834] R10: 0000000000000000 R11: 0000000000000297 R12: ffffffffffffffff [ 54.464092] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 54.471361] CPU: 0 PID: 4502 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 54.475079] BTRFS error (device loop7): unsupported checksum algorithm 16 executing program [ 54.479849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.479853] Call Trace: [ 54.479872] dump_stack+0x1c9/0x2b4 [ 54.479889] ? dump_stack_print_info.cold.2+0x52/0x52 [ 54.486804] BTRFS error (device loop7): superblock checksum mismatch [ 54.496307] ? lock_downgrade+0x8f0/0x8f0 [ 54.496325] should_fail.cold.4+0xa/0x11 [ 54.503576] FAULT_INJECTION: forcing a failure. [ 54.503576] name failslab, interval 1, probability 0, space 0, times 0 [ 54.507688] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 54.507704] ? up_write+0x7b/0x220 [ 54.507719] ? up_read+0x110/0x110 [ 54.545719] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 54.551245] ? __generic_file_write_iter+0x1bd/0x630 [ 54.556338] ? timespec64_trunc+0xea/0x180 [ 54.560564] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.566095] ? generic_file_write_iter+0x4a3/0x870 [ 54.571017] ? lock_acquire+0x1e4/0x540 [ 54.574994] ? fs_reclaim_acquire+0x20/0x20 [ 54.579305] ? lock_downgrade+0x8f0/0x8f0 [ 54.583442] ? check_same_owner+0x340/0x340 [ 54.587764] ? fsnotify+0xbac/0x14e0 [ 54.591465] ? rcu_note_context_switch+0x730/0x730 [ 54.596386] ? lock_downgrade+0x8f0/0x8f0 [ 54.600527] __should_failslab+0x124/0x180 [ 54.604764] should_failslab+0x9/0x14 [ 54.608573] kmem_cache_alloc+0x2af/0x760 [ 54.612713] getname_flags+0xd0/0x5a0 [ 54.616501] getname+0x19/0x20 [ 54.619680] do_sys_open+0x3a2/0x720 [ 54.623381] ? filp_open+0x80/0x80 [ 54.626911] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.632435] ? do_sys_ftruncate+0x44e/0x560 [ 54.636747] __x64_sys_open+0x7e/0xc0 [ 54.640537] do_syscall_64+0x1b9/0x820 [ 54.644417] ? syscall_return_slowpath+0x5e0/0x5e0 [ 54.649337] ? syscall_return_slowpath+0x31d/0x5e0 [ 54.654252] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 54.659255] ? prepare_exit_to_usermode+0x291/0x3b0 [ 54.664258] ? perf_trace_sys_enter+0xb10/0xb10 [ 54.668917] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.673770] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.678944] RIP: 0033:0x401cd0 [ 54.682115] Code: 01 f0 ff ff 0f 83 d0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 69 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 a4 0a 00 00 c3 48 83 ec 08 e8 5a 01 00 00 [ 54.701319] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 54.709016] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401cd0 [ 54.716273] RDX: 00007fff5cef059a RSI: 0000000000000002 RDI: 00007fff5cef0590 [ 54.723807] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000a [ 54.731064] R10: 0000000000000075 R11: 0000000000000246 R12: ffffffffffffffff [ 54.738320] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 54.745590] CPU: 1 PID: 4503 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 54.754090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.763444] Call Trace: [ 54.766035] dump_stack+0x1c9/0x2b4 [ 54.769674] ? dump_stack_print_info.cold.2+0x52/0x52 [ 54.774867] ? lock_downgrade+0x8f0/0x8f0 [ 54.779020] should_fail.cold.4+0xa/0x11 [ 54.783275] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 54.788383] ? up_write+0x7b/0x220 [ 54.789804] page:ffffea0007032d80 count:2 mapcount:1 mapping:ffff8801b6f4d5b1 index:0x6d8 [ 54.791943] ? up_read+0x110/0x110 [ 54.791957] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 54.791976] ? __generic_file_write_iter+0x1bd/0x630 [ 54.803811] ? timespec64_trunc+0xea/0x180 [ 54.803826] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.803843] ? generic_file_write_iter+0x4a3/0x870 [ 54.809384] flags: 0x2fffc0000040068(uptodate|lru|active|swapbacked) [ 54.814613] ? lock_acquire+0x1e4/0x540 [ 54.814629] ? fs_reclaim_acquire+0x20/0x20 [ 54.818857] raw: 02fffc0000040068 ffffea00071393c8 ffffea0007032dc8 ffff8801b6f4d5b1 [ 54.824353] ? lock_downgrade+0x8f0/0x8f0 [ 54.824375] ? check_same_owner+0x340/0x340 [ 54.829316] raw: 00000000000006d8 0000000000000000 0000000200000000 ffff8801b3294380 [ 54.835775] ? fsnotify+0xbac/0x14e0 [ 54.835787] ? rcu_note_context_switch+0x730/0x730 [ 54.835803] ? lock_downgrade+0x8f0/0x8f0 [ 54.839759] page dumped because: VM_BUG_ON_PAGE(page_to_pgoff(page) != index) [ 54.844240] __should_failslab+0x124/0x180 [ 54.844259] should_failslab+0x9/0x14 [ 54.852122] page->mem_cgroup:ffff8801b3294380 [ 54.856239] kmem_cache_alloc+0x2af/0x760 [ 54.856259] getname_flags+0xd0/0x5a0 [ 54.860657] ------------[ cut here ]------------ [ 54.868519] getname+0x19/0x20 [ 54.872313] kernel BUG at mm/shmem.c:815! [ 54.877220] do_sys_open+0x3a2/0x720 [ 54.881399] invalid opcode: 0000 [#1] SMP KASAN [ 54.888689] ? filp_open+0x80/0x80 [ 54.892900] CPU: 0 PID: 4496 Comm: syz-executor035 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 54.896676] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.901139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.905269] ? do_sys_ftruncate+0x44e/0x560 [ 54.909044] RIP: 0010:shmem_undo_range+0xdaa/0x29a0 [ 54.913773] __x64_sys_open+0x7e/0xc0 [ 54.917192] Code: [ 54.921325] do_syscall_64+0x1b9/0x820 [ 54.925111] 00 [ 54.929773] ? syscall_return_slowpath+0x5e0/0x5e0 [ 54.933278] 0f [ 54.942541] ? syscall_return_slowpath+0x31d/0x5e0 [ 54.948061] 85 [ 54.957398] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 54.961683] bd [ 54.966695] ? prepare_exit_to_usermode+0x291/0x3b0 [ 54.970454] 19 00 [ 54.972591] ? perf_trace_sys_enter+0xb10/0xb10 [ 54.976441] 00 [ 54.978314] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.983206] 48 [ 54.985079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.989972] 8d [ 54.991930] RIP: 0033:0x401cd0 [ 54.996910] 65 [ 54.998773] Code: [ 55.003759] d8 [ 55.005883] 01 [ 55.010532] 5b [ 55.012412] f0 [ 55.017225] 41 [ 55.019087] ff [ 55.024251] 5c [ 55.026116] ff [ 55.029283] 41 5d [ 55.031152] 0f [ 55.033277] 41 [ 55.035139] 83 [ 55.037000] 5e [ 55.038862] d0 [ 55.040725] 41 [ 55.042590] 0a [ 55.044453] 5f [ 55.046313] 00 [ 55.048174] 5d [ 55.050297] 00 [ 55.052160] c3 [ 55.054021] c3 [ 55.055882] e8 [ 55.057745] 66 [ 55.059607] a5 [ 55.061471] 2e [ 55.063332] f0 [ 55.065196] 0f [ 55.067056] d6 [ 55.068915] 1f [ 55.070782] ff [ 55.072645] 84 [ 55.074505] 48 [ 55.076360] 00 00 [ 55.078229] c7 [ 55.080089] 00 [ 55.081969] c6 [ 55.083838] 00 [ 55.085700] e0 [ 55.087570] 00 [ 55.089435] 32 [ 55.091296] 0f [ 55.093154] f1 87 [ 55.095021] 1f [ 55.097145] 4c [ 55.099006] 44 [ 55.100869] 89 [ 55.102733] 00 [ 55.104595] e7 [ 55.106458] 00 [ 55.108321] e8 [ 55.110183] 83 [ 55.112046] 16 [ 55.114166] 3d [ 55.116027] 10 [ 55.117893] fd [ 55.119756] 05 [ 55.121617] 69 [ 55.123479] 00 [ 55.125340] 2d [ 55.127200] <0f> [ 55.129060] 00 [ 55.130920] 0b [ 55.132785] 00 [ 55.134648] e8 [ 55.136508] 75 [ 55.138374] 8f [ 55.140236] 14 [ 55.142097] f0 [ 55.143956] b8 [ 55.145818] d6 [ 55.147856] 02 [ 55.149719] ff [ 55.151581] 00 [ 55.153441] 49 [ 55.155306] 00 [ 55.157166] 8d [ 55.159032] 00 [ 55.160891] 7c [ 55.162754] 0f [ 55.164614] 24 [ 55.166478] 05 [ 55.168339] 20 [ 55.170203] <48> [ 55.172065] 48 [ 55.173926] 3d [ 55.175788] 89 [ 55.177657] 01 [ 55.179519] f8 [ 55.181382] f0 [ 55.183253] 48 [ 55.185117] ff [ 55.186978] c1 [ 55.188839] ff [ 55.190876] e8 [ 55.192738] 0f [ 55.194600] 03 80 [ 55.196479] 83 [ 55.198357] 3c [ 55.200226] a4 [ 55.202088] 18 [ 55.203944] 0a 00 [ 55.207761] 00 [ 55.209626] RSP: 0018:ffff8801ac4f6158 EFLAGS: 00010246 [ 55.211487] c3 [ 55.215475] 48 83 [ 55.217350] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 55.219205] ec [ 55.221070] RDX: 0000000000000000 RSI: ffffffff81aaab95 RDI: ffffed003589ec18 [ 55.222930] 08 [ 55.225057] RBP: ffff8801ac4f68d0 R08: ffff8801b810c040 R09: fffffbfff11f1224 [ 55.226914] e8 [ 55.232254] R10: fffffbfff11f1224 R11: ffffffff88f89123 R12: ffffea0007032d80 [ 55.234111] 5a [ 55.236247] R13: ffff8801ac4f68a8 R14: 0000000000000000 R15: 00000000000006d8 [ 55.243485] 01 [ 55.245353] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 55.252590] 00 [ 55.254460] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.261697] 00 [ 55.263564] CR2: 0000000001880fd0 CR3: 0000000008e6a000 CR4: 00000000001406f0 [ 55.272675] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.279918] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 [ 55.281781] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.289976] ORIG_RAX: 0000000000000002 [ 55.291838] Call Trace: [ 55.297697] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401cd0 [ 55.299579] ? shmem_get_link+0x690/0x690 [ 55.306813] RDX: 00007fff5cef059a RSI: 0000000000000002 RDI: 00007fff5cef0590 [ 55.314071] ? lock_release+0xa30/0xa30 [ 55.319399] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000a [ 55.326659] ? __account_cfs_rq_runtime+0x770/0x770 [ 55.330599] R10: 0000000000000075 R11: 0000000000000246 R12: ffffffffffffffff [ 55.333162] ? rq_online_fair+0x4c0/0x4c0 [ 55.340403] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 55.344530] ? __mem_cgroup_threshold+0x240/0x740 [ 55.391492] ? check_preempt_wakeup+0x546/0x1280 [ 55.396266] ? dequeue_task_fair+0xa10/0xa10 [ 55.400663] ? trace_hardirqs_on+0x10/0x10 [ 55.404883] ? start_stop_khugepaged.cold.50+0x46/0x46 [ 55.410144] ? check_preempt_curr+0x1ec/0x3a0 [ 55.414630] ? try_to_wake_up+0x10a/0x12b0 [ 55.418853] ? lock_downgrade+0x8f0/0x8f0 [ 55.422982] ? lock_downgrade+0x8f0/0x8f0 [ 55.427111] ? check_preempt_curr+0x3a0/0x3a0 [ 55.431590] ? kasan_check_read+0x11/0x20 [ 55.435720] ? do_raw_spin_unlock+0xa7/0x2f0 [ 55.440111] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.444673] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.449236] ? rcu_read_lock+0x70/0x70 [ 55.453107] ? trace_hardirqs_off+0xd/0x10 [ 55.457337] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 55.462420] ? try_to_wake_up+0x10a/0x12b0 [ 55.466641] ? migrate_swap_stop+0x850/0x850 [ 55.471033] ? trace_hardirqs_on+0xd/0x10 [ 55.475166] ? trace_hardirqs_on+0x10/0x10 [ 55.479383] ? trace_hardirqs_on+0x10/0x10 [ 55.483603] ? __page_frag_cache_drain+0x1f0/0x1f0 [ 55.488532] ? do_raw_spin_unlock+0xa7/0x2f0 [ 55.492926] ? trace_hardirqs_on+0x10/0x10 [ 55.497230] ? trace_hardirqs_on+0x10/0x10 [ 55.501454] shmem_truncate_range+0x27/0xa0 [ 55.505759] shmem_evict_inode+0x3b2/0xcb0 [ 55.509976] ? shmem_truncate_range+0xa0/0xa0 [ 55.514452] ? trace_hardirqs_on+0x10/0x10 [ 55.518672] ? lock_acquire+0x1e4/0x540 [ 55.522628] ? inode_wait_for_writeback+0x2f/0x40 [ 55.527451] ? lock_downgrade+0x8f0/0x8f0 [ 55.531578] ? evict+0x468/0x990 [ 55.534925] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.540445] ? __inode_wait_for_writeback+0x2cf/0x380 [ 55.545624] ? kasan_check_read+0x11/0x20 [ 55.549760] ? do_raw_spin_unlock+0xa7/0x2f0 [ 55.554148] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.558715] ? kasan_check_write+0x14/0x20 [ 55.562930] ? do_raw_spin_lock+0xc1/0x200 [ 55.567151] ? shmem_truncate_range+0xa0/0xa0 [ 55.571631] evict+0x4ae/0x990 [ 55.574809] ? destroy_inode+0x200/0x200 [ 55.578912] ? do_raw_spin_lock+0xc1/0x200 [ 55.583128] ? lock_downgrade+0x8f0/0x8f0 [ 55.587345] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 55.592865] ? kasan_check_read+0x11/0x20 [ 55.596992] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.601577] iput+0x635/0xaa0 [ 55.604669] ? fsnotify_final_mark_destroy+0xc0/0xc0 [ 55.609754] ? inode_add_lru+0x2a0/0x2a0 [ 55.613798] ? fsnotify_destroy_marks+0x2e7/0x5c0 [ 55.619229] ? kasan_check_read+0x11/0x20 [ 55.623357] ? do_raw_spin_unlock+0xa7/0x2f0 [ 55.627756] ? fsnotify_clear_marks_by_group+0x640/0x640 [ 55.633189] ? debug_object_active_state+0x2f5/0x4d0 [ 55.638275] dentry_unlink_inode+0x4ae/0x640 [ 55.642662] ? kasan_check_read+0x11/0x20 [ 55.646808] ? d_lru_add+0x120/0x120 [ 55.650512] ? kasan_check_write+0x14/0x20 [ 55.654726] ? do_raw_spin_lock+0xc1/0x200 [ 55.658944] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.664473] ? lockref_mark_dead+0xef/0x170 [ 55.668780] ? lockref_get_not_dead+0x90/0x90 [ 55.673272] ? lock_acquire+0x1e4/0x540 [ 55.677229] __dentry_kill+0x44c/0x7a0 [ 55.681099] ? d_drop+0x70/0x70 [ 55.684369] ? do_raw_spin_lock+0x200/0x200 [ 55.688670] ? lock_release+0xa30/0xa30 [ 55.692627] ? check_same_owner+0x340/0x340 [ 55.696931] dentry_kill+0xc9/0x5a0 [ 55.700541] dput.part.26+0x66b/0x7a0 [ 55.704322] ? shrink_dcache_sb+0x350/0x350 [ 55.708629] ? rcu_note_context_switch+0x730/0x730 [ 55.713542] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 55.718540] dput+0x15/0x20 [ 55.721454] __fput+0x558/0x930 [ 55.724716] ? fput+0x1a0/0x1a0 [ 55.727976] ? check_same_owner+0x340/0x340 [ 55.732279] ? kasan_check_write+0x14/0x20 [ 55.736509] ? do_raw_spin_lock+0xc1/0x200 [ 55.740725] ____fput+0x15/0x20 [ 55.743986] task_work_run+0x1ec/0x2a0 [ 55.747861] ? task_work_cancel+0x250/0x250 [ 55.752173] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 55.757697] ? switch_task_namespaces+0xa2/0xd0 [ 55.762347] do_exit+0x1b08/0x2750 [ 55.765869] ? mm_update_next_owner+0x9a0/0x9a0 [ 55.770531] ? lock_acquire+0x1e4/0x540 [ 55.774490] ? __schedule+0x1ed0/0x1ed0 [ 55.778446] ? lock_downgrade+0x8f0/0x8f0 [ 55.782579] ? lock_acquire+0x1e4/0x540 [ 55.786534] ? wait_for_completion_killable+0x5a7/0x9a0 [ 55.791880] ? lock_downgrade+0x8f0/0x8f0 [ 55.796017] ? kasan_check_read+0x11/0x20 [ 55.800230] ? do_raw_spin_unlock+0xa7/0x2f0 [ 55.804620] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.809181] ? kasan_check_write+0x14/0x20 [ 55.813402] ? do_raw_spin_lock+0xc1/0x200 [ 55.817617] ? trace_hardirqs_on+0x10/0x10 [ 55.821832] ? trace_hardirqs_on+0xd/0x10 [ 55.825960] ? _raw_spin_unlock_irq+0x27/0x70 [ 55.830439] ? wait_for_completion_killable+0x5a7/0x9a0 [ 55.836045] ? wait_for_completion_interruptible_timeout+0x9a0/0x9a0 [ 55.842515] ? lock_downgrade+0x8f0/0x8f0 [ 55.846643] ? wake_up_q+0x100/0x100 [ 55.850347] ? kasan_check_read+0x11/0x20 [ 55.854476] ? lo_ioctl+0x1dc/0x1d00 [ 55.858178] ? kasan_check_write+0x14/0x20 [ 55.862395] ? do_raw_spin_lock+0xc1/0x200 [ 55.866612] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.872127] ? __kthread_create_on_node+0x34f/0x4c0 [ 55.877128] ? kasan_check_write+0x14/0x20 [ 55.881345] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 55.886257] ? memset+0x31/0x40 [ 55.889516] ? __dequeue_signal+0xf9/0x7d0 [ 55.893736] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.899251] ? recalc_sigpending_tsk+0x140/0x180 [ 55.903990] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 55.909509] ? recalc_sigpending_tsk+0x180/0x180 [ 55.914246] ? get_signal+0x918/0x1970 [ 55.918114] ? lock_downgrade+0x8f0/0x8f0 [ 55.922245] do_group_exit+0x177/0x440 [ 55.926122] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 55.930685] ? __ia32_sys_exit+0x50/0x50 [ 55.934736] ? kasan_check_write+0x14/0x20 [ 55.938950] ? do_raw_spin_lock+0xc1/0x200 [ 55.943166] get_signal+0x88e/0x1970 [ 55.946866] ? ptrace_notify+0x130/0x130 [ 55.950911] ? save_stack+0xa9/0xd0 [ 55.954522] ? save_stack+0x43/0xd0 [ 55.958131] ? __kasan_slab_free+0x11a/0x170 [ 55.962520] ? kasan_slab_free+0xe/0x10 [ 55.966474] ? kmem_cache_free+0x86/0x2d0 [ 55.970606] ? putname+0xf2/0x130 [ 55.974038] ? do_sys_open+0x569/0x720 [ 55.977903] ? __x64_sys_open+0x7e/0xc0 [ 55.981859] ? do_syscall_64+0x1b9/0x820 [ 55.985913] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.991259] ? kasan_check_read+0x11/0x20 [ 55.995391] do_signal+0x9c/0x21c0 [ 55.998914] ? kasan_check_write+0x14/0x20 [ 56.003128] ? do_raw_spin_lock+0xc1/0x200 [ 56.007355] ? setup_sigcontext+0x7d0/0x7d0 [ 56.011656] ? blkdev_fallocate+0x400/0x400 [ 56.015957] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.021476] ? do_vfs_ioctl+0x201/0x1720 [ 56.025522] ? ioctl_preallocate+0x300/0x300 [ 56.029913] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.035429] ? __fget_light+0x2f7/0x440 [ 56.039388] ? putname+0xf7/0x130 [ 56.042821] ? do_sys_open+0x3cb/0x720 [ 56.046690] exit_to_usermode_loop+0x2e0/0x370 [ 56.051252] ? syscall_slow_exit_work+0x500/0x500 [ 56.056074] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.061591] ? ksys_ioctl+0x81/0xd0 [ 56.065203] do_syscall_64+0x6be/0x820 [ 56.069097] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.074014] ? syscall_return_slowpath+0x31d/0x5e0 [ 56.078925] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 56.083923] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.088920] ? perf_trace_sys_enter+0xb10/0xb10 [ 56.093589] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.098417] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.103585] RIP: 0033:0x445ab7 [ 56.106752] Code: Bad RIP value. [ 56.110111] RSP: 002b:00007fff5cef0438 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 56.117885] RAX: fffffffffffffff4 RBX: 0000000000000005 RCX: 0000000000445ab7 [ 56.125137] RDX: 0000000000000005 RSI: 0000000000004c00 RDI: 0000000000000006 [ 56.132385] RBP: 0000000000000006 R08: 0000000000000000 R09: 000000000000000a [ 56.139652] R10: 0000000000000075 R11: 0000000000000213 R12: ffffffffffffffff [ 56.146901] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 56.154152] Modules linked in: [ 56.157327] Dumping ftrace buffer: [ 56.160840] (ftrace buffer empty) [ 56.166114] ---[ end trace 090d00196035019d ]--- [ 56.170916] RIP: 0010:shmem_undo_range+0xdaa/0x29a0 [ 56.176075] Code: 00 0f 85 bd 19 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a5 f0 d6 ff 48 c7 c6 e0 32 f1 87 4c 89 e7 e8 16 10 05 00 <0f> 0b e8 8f f0 d6 ff 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 80 3c 18 [ 56.185655] FAULT_INJECTION: forcing a failure. [ 56.185655] name failslab, interval 1, probability 0, space 0, times 0 [ 56.196993] RSP: 0018:ffff8801ac4f6158 EFLAGS: 00010246 [ 56.206882] CPU: 1 PID: 4511 Comm: syz-executor035 Tainted: G D 4.18.0-rc3-next-20180706+ #1 [ 56.212227] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 56.222075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.222079] Call Trace: [ 56.222098] dump_stack+0x1c9/0x2b4 [ 56.222116] ? dump_stack_print_info.cold.2+0x52/0x52 [ 56.229366] RDX: 0000000000000000 RSI: ffffffff81aaab95 RDI: ffffed003589ec18 [ 56.238700] ? lock_downgrade+0x8f0/0x8f0 [ 56.238718] should_fail.cold.4+0xa/0x11 [ 56.241285] RBP: ffff8801ac4f68d0 R08: ffff8801b810c040 R09: fffffbfff11f1224 [ 56.244883] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 56.244899] ? up_write+0x7b/0x220 [ 56.250069] R10: fffffbfff11f1224 R11: ffffffff88f89123 R12: ffffea0007032d80 [ 56.257309] ? up_read+0x110/0x110 [ 56.257322] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.257340] ? __generic_file_write_iter+0x1bd/0x630 [ 56.261465] R13: ffff8801ac4f68a8 R14: 0000000000000000 R15: 00000000000006d8 [ 56.265492] ? timespec64_trunc+0xea/0x180 [ 56.265510] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.272770] FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 56.277837] ? generic_file_write_iter+0x4a3/0x870 [ 56.277855] ? lock_acquire+0x1e4/0x540 [ 56.281374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.288624] ? fs_reclaim_acquire+0x20/0x20 [ 56.288643] ? lock_downgrade+0x8f0/0x8f0 [ 56.292160] CR2: 0000000000445a8d CR3: 0000000008e6a000 CR4: 00000000001406f0 [ 56.297690] ? check_same_owner+0x340/0x340 [ 56.297706] ? fsnotify+0xbac/0x14e0 [ 56.302789] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.310036] ? rcu_note_context_switch+0x730/0x730 [ 56.310052] ? lock_downgrade+0x8f0/0x8f0 [ 56.314265] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.319773] __should_failslab+0x124/0x180 [ 56.319790] should_failslab+0x9/0x14 [ 56.327994] Kernel panic - not syncing: Fatal exception [ 56.332896] kmem_cache_alloc+0x2af/0x760 [ 56.407284] getname_flags+0xd0/0x5a0 [ 56.411066] getname+0x19/0x20 [ 56.414238] do_sys_open+0x3a2/0x720 [ 56.417931] ? filp_open+0x80/0x80 [ 56.421457] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.426976] ? do_sys_ftruncate+0x44e/0x560 [ 56.431281] __x64_sys_open+0x7e/0xc0 [ 56.435066] do_syscall_64+0x1b9/0x820 [ 56.438932] ? syscall_slow_exit_work+0x500/0x500 [ 56.443759] ? syscall_return_slowpath+0x5e0/0x5e0 [ 56.448671] ? syscall_return_slowpath+0x31d/0x5e0 [ 56.453582] ? prepare_exit_to_usermode+0x291/0x3b0 [ 56.458581] ? perf_trace_sys_enter+0xb10/0xb10 [ 56.463232] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.468061] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.473230] RIP: 0033:0x401cd0 [ 56.476397] Code: 01 f0 ff ff 0f 83 d0 0a 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 69 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 a4 0a 00 00 c3 48 83 ec 08 e8 5a 01 00 00 [ 56.495568] RSP: 002b:00007fff5cef0438 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 56.503258] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000401cd0 [ 56.510511] RDX: 00007fff5cef059a RSI: 0000000000000002 RDI: 00007fff5cef0590 [ 56.517767] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000a [ 56.525015] R10: 0000000000000075 R11: 0000000000000246 R12: ffffffffffffffff [ 56.532263] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 56.540003] Dumping ftrace buffer: [ 56.543528] (ftrace buffer empty) [ 56.547215] Kernel Offset: disabled [ 56.550818] Rebooting in 86400 seconds..